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In the circuit shown below. Determine the power dissipated in 3Ω resistor.(a) 7.77(b) 8.77(c) 9.77(d) 10.77The question was asked by my school principal while I was bunking the class.The question is from Nodal Analysis topic in division Steady State AC Analysis of Network Theory

Answer»

Correct choice is (b) 8.77

Best explanation: CURRENT in 3Ω RESISTOR I3 =(-20∠30^o+16.27∠18.91^o)/3=1.71∠-112^o. Power dissipated in 3Ω resistor P=I3^2 R=1.71^2×3=8.77W.



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